AFFF - next to useless IMHO. Did a rally at Pembrey just after the change to AFFF and a Cozzy had an under bonnet oil fire. Tried plumbed-in system and 7! hand-helds from the following cars to put it out all without success. In the end someone got hold of a powder extinguisher and put it out in a few seconds.
AFFF just bounces off radiators, at least the old BCF's went through and filled the engine bay!
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